5306-00-531-8551, BOLT,MACHINE

National Stock Number:
5306-00-531-8551

Federal Supply Class:
5306

National Item Identification Number:
005318551

Description:
BOLT,MACHINE

Detail:
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.

Manufacturer Information:

331066	77445	RTX CORPORATION
331066	80539	SPS TECHNOLOGIES, LLC

Techincal Specification:

THREAD DIRECTION	RIGHT-HAND
FASTENER LENGTH	0.615 INCHES MINIMUM AND
	0.635 INCHES MAXIMUM
MATERIAL	STEEL CORROSION RESISTING OVERALL
THREAD LENGTH	0.581 INCHES MINIMUM
HEAD STYLE	HEXAGON
THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.312 INCHES
THREAD QUANTITY PER INCH	24
THREAD CLASS	1A
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	SILVER THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE THREADS
HARDNESS RATING	30.0 ROCKWELL C MINIMUM AND
	38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.178 INCHES MINIMUM AND
	0.198 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.492 INCHES MINIMUM AND
	0.502 INCHES MAXIMUM
SURFACE FINISH	63.0 MICROINCHES BEARING SURFACE OF HEAD
	32.0 MICROINCHES THREADS
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.485 INCHES MINIMUM AND
	0.505 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.065 INCHES MINIMUM AND
	0.072 INCHES MAXIMUM FIRST HOLE
FEATURES PROVIDED	FINISHED HEAD
PRECIOUS MATERIAL	SILVER
THE MANUFACTURERS DATA
MANUFACTURERS CODE	77445
DESIGN CONTROL REFERENCE	331066

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